I love quirky/abnormal systems, and when I heard of the PITCH system, I was intrigued.

I've heard of coin tosses in games before, but never incrementing up on values of coins. I'm not 100% sure of all the strengths and merits of the system, because my head isn't as familiar with coins as it is with dice, but it sounds cool, and the only gripe I have with it is this:

At one point I read (and this may actually be paraphrased, but the result's the same) "Toss 1c8 1c4 times". This means tossing 4 coins a number of times indicated by 3 coins, each of which has a value of its own. So you'd be tossing 4 to 36 coins [for a result of 8-128, I think, if my base-2 head is working] (at least if I understood the system correctly, since the coin toss, as I understand it, gives a chance of each number from the maximum to the minimum). I recognize that this is not terribly hard, but it would put the PITCH system well into the world of Shadowrun, where players must carry around a ton of pieces. This isn't necessarily bad, and I admit that the coin system is ingenious, and carrying 36 coins is no feat, but you'd want to keep each of the 4 types of coins separate (well, three, if you're not counting unmarked). The math could also be hard to do later on in caffeine-fueled gaming sessions (though I'm not necessarily the best to ask, since math ain't my forte).

The Chronoplex setting is basic, but shows promise, though it hurts my head like no tomorrow. All in all, I'd say it's good, and a refreshing break from the norm (throwing coins is admittedly very fun, and feels like a relaxing break from dice at times) though it's not for every gamer just based on the time it takes to count so many varying pieces.

Thanks so much for the review! Four stars is high praise considering that this is still a work in progress.
I believe the passage you've referenced as problematic is the rule for figuring damage for magical backlash. Although this rule is an exception to the norm, your concern is valid; the rule could definitely use some refinement. My goal is for Chronoplex to be playable primarily using only four coins, so feedback like this is invaluable.
I encourage everyone reading this to download the free beta pack, run through the provided adventure and then let your opinions be heard at http://www.deadtreegames.com. After all, the more feedback I receive, the better the final publication will be!